Question to the Department for Transport:

To ask the Secretary of State for Transport, if he will make an estimate of the number of road traffic collisions that are attributable to insomnia.

The Department produces statistics on personal injury road collisions based on data reported by the police using the STATS19 system. This does not record the number of collisions attributable to insomnia, but does record those where fatigue was assigned as a contributory factor.

The number of injury collisions in Great Britain where a police officer attended the scene and allocated the contributory factor ‘fatigue’ to one of the participants was 1,195 in 2021, and this was 2% of the total.